heart monitor

例句：

1. 1. The doctor recommended a heart monitor for her to wear at home.
   医生建议她在家佩戴一个心脏监测器。
2. 2.The patient was monitored during the surgery with a heart monitor.
   患者在手术期间被用心脏监测器进行监控。
3. 3.The nurse checked the heart monitor before giving the patient medication.
   护士在给患者用药前检查了心脏监测器。